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[79.242.59.227]) by smtp.gmail.com with ESMTPSA id fs20-20020a05600c3f9400b004132b1385aesm6178849wmb.15.2024.03.12.09.10.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 12 Mar 2024 09:10:31 -0700 (PDT) Message-ID: <58fbe42a-3051-46bf-a3f9-d59da28a9cd7@redhat.com> Date: Tue, 12 Mar 2024 17:10:30 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 00/15] Fast kernel headers: split linux/mm.h To: Max Kellermann , akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: willy@infradead.org, sfr@canb.auug.org.au References: <20240312094133.2084996-1-max.kellermann@ionos.com> From: David Hildenbrand Autocrypt: addr=david@redhat.com; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAl8Ox4kFCRKpKXgACgkQTd4Q 9wD/g1oHcA//a6Tj7SBNjFNM1iNhWUo1lxAja0lpSodSnB2g4FCZ4R61SBR4l/psBL73xktp rDHrx4aSpwkRP6Epu6mLvhlfjmkRG4OynJ5HG1gfv7RJJfnUdUM1z5kdS8JBrOhMJS2c/gPf wv1TGRq2XdMPnfY2o0CxRqpcLkx4vBODvJGl2mQyJF/gPepdDfcT8/PY9BJ7FL6Hrq1gnAo4 3Iv9qV0JiT2wmZciNyYQhmA1V6dyTRiQ4YAc31zOo2IM+xisPzeSHgw3ONY/XhYvfZ9r7W1l pNQdc2G+o4Di9NPFHQQhDw3YTRR1opJaTlRDzxYxzU6ZnUUBghxt9cwUWTpfCktkMZiPSDGd KgQBjnweV2jw9UOTxjb4LXqDjmSNkjDdQUOU69jGMUXgihvo4zhYcMX8F5gWdRtMR7DzW/YE BgVcyxNkMIXoY1aYj6npHYiNQesQlqjU6azjbH70/SXKM5tNRplgW8TNprMDuntdvV9wNkFs 9TyM02V5aWxFfI42+aivc4KEw69SE9KXwC7FSf5wXzuTot97N9Phj/Z3+jx443jo2NR34XgF 89cct7wJMjOF7bBefo0fPPZQuIma0Zym71cP61OP/i11ahNye6HGKfxGCOcs5wW9kRQEk8P9 M/k2wt3mt/fCQnuP/mWutNPt95w9wSsUyATLmtNrwccz63XOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCXw7HsgUJEqkpoQAKCRBN3hD3AP+DWrrpD/4qS3dyVRxDcDHIlmguXjC1Q5tZTwNB boaBTPHSy/Nksu0eY7x6HfQJ3xajVH32Ms6t1trDQmPx2iP5+7iDsb7OKAb5eOS8h+BEBDeq 3ecsQDv0fFJOA9ag5O3LLNk+3x3q7e0uo06XMaY7UHS341ozXUUI7wC7iKfoUTv03iO9El5f XpNMx/YrIMduZ2+nd9Di7o5+KIwlb2mAB9sTNHdMrXesX8eBL6T9b+MZJk+mZuPxKNVfEQMQ a5SxUEADIPQTPNvBewdeI80yeOCrN+Zzwy/Mrx9EPeu59Y5vSJOx/z6OUImD/GhX7Xvkt3kq Er5KTrJz3++B6SH9pum9PuoE/k+nntJkNMmQpR4MCBaV/J9gIOPGodDKnjdng+mXliF3Ptu6 3oxc2RCyGzTlxyMwuc2U5Q7KtUNTdDe8T0uE+9b8BLMVQDDfJjqY0VVqSUwImzTDLX9S4g/8 kC4HRcclk8hpyhY2jKGluZO0awwTIMgVEzmTyBphDg/Gx7dZU1Xf8HFuE+UZ5UDHDTnwgv7E th6RC9+WrhDNspZ9fJjKWRbveQgUFCpe1sa77LAw+XFrKmBHXp9ZVIe90RMe2tRL06BGiRZr jPrnvUsUUsjRoRNJjKKA/REq+sAnhkNPPZ/NNMjaZ5b8Tovi8C0tmxiCHaQYqj7G2rgnT0kt WNyWQQ== Organization: Red Hat In-Reply-To: <20240312094133.2084996-1-max.kellermann@ionos.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: E5F471C001C X-Rspam-User: X-Stat-Signature: c87p3zc1ye9516esj5y37ccktj3ho9un X-Rspamd-Server: rspam01 X-HE-Tag: 1710259835-603193 X-HE-Meta: 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 JCA5E7EQ fzkCqUCyq8aq1GyKn03Y5Vs7bJUj8rM5oNt+jVeh6/zgFENHQ8eKt1FznMAa5OZIJD8IKuHHw0S0jWoJPJFZeIa7TPeRg3qOeNcpsDZSH5mrsXTbX0rHoqoUKI3ds1nzjKjU6zMt9qUN0SYXr5eSBq1KBkcSW51RL6tql X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 12.03.24 10:41, Max Kellermann wrote: > This patch set aims to clean up the linux/mm.h header and reduce > dependencies on it by moving parts out. > > The goal was to eliminate dependencies on linux/mm.h from other > popular headers such as highmem.h and dma-mapping.h, and I started by > checking which symbols were really used and moved those declarations > to separate slim headers. > [...] > include/linux/mm.h | 583 +----------------- > include/linux/mm/devmap_managed.h | 37 ++ > include/linux/mm/folio_next.h | 27 + Isn't that a bit excessive? Do we really need that many folio headers? -- Cheers, David / dhildenb